公开(公告)号：US20020178832A1

公开(公告)日：2002-12-05

申请号：US10108150

申请日：2002-03-27

发明人： Bahman Sarabi ,  Martin Wanders ,  Dietmar Wachtler ,  Andreas Wende

IPC分类号： G01D001/16

CPC分类号： G06F17/5018 ,  G01N2203/0214 ,  G06F2217/80

摘要： The relationship between the stress null and the strain null is firstly established in step 100 with short-term tests as a function of the temperature T. In steps 101 to 104, a Findley model is extended in such a way as to obtain a relationship between the strain null and the stress null as a function of the time t and the temperature T. The two models are combined in steps 105 and 106, so as to obtain overall a relationship between the stress null and the strain null as a function of the time t and the temperature T.

摘要翻译： 应力σ与应变εi之间的关系首先在短期测试中作为温度T的函数在步骤100中建立。在步骤101至104中，以一种方式扩展了一个Findley模型，以获得 应变εi和应力σ作为时间t和温度T的函数。两个模型在步骤105和106中组合，以便总体上获得应力σ和应变εi之间的关系作为函数 时间t和温度T.

公开(公告)号：US20040025596A1

公开(公告)日：2004-02-12

申请号：US10311749

申请日：2003-07-08

发明人： Falk Tegtmeier ,  Manfred Peters

IPC分类号： G01D001/16

CPC分类号： G01L5/0004

摘要： The invention relates to a force transducer, which is inserted into a small boring inside a test object and which, inside the boring, can measure the elastic extensions caused by the surrounding stress matrix. The force transducer is provided in two parts consisting of an outer part and of an inner part. Both parts are provided with a conical inner boring or conical outer periphery in such a manner that they can be held inside the boring of the test object by a tractive force generated using any means. In order to span a large tolerance zone the measuring boring, the outer part is axially provided with multiple slits on both sides. Said outer part is provided with a polygonal shape and thereby detects the deformations to be measured not over the entire periphery, but it records these via the contacts axially oriented through the angle lines. The extension is integrated in a peripheral direction between said contacts and is transferred into the inner part provided with any type of measuring device.

摘要翻译： 本发明涉及一种力传感器，其被插入到测试对象内部的小镗孔内，并且在钻孔内部可以测量由周围应力矩阵引起的弹性延伸。 力传感器设置在由外部部分和内部部分组成的两部分中。 两个部件都具有圆锥形的内部镗孔或圆锥形的外周边，使得它们可以通过任何方式产生的牵引力保持在被测物体的钻孔内。 为了跨越大公差带测量镗孔，外侧部件在两侧轴向设有多个狭缝。 所述外部部分设置有多边形，从而检测不是在整个周边被测量的变形，而是通过轴向方向通过角度线记录这些变形。 延伸部在所述触头之间沿周向集成，并被传送到设置有任何类型的测量装置的内部部分中。

公开(公告)号：US20040011137A1

公开(公告)日：2004-01-22

申请号：US10616599

申请日：2003-07-10

发明人： William P. Hnat ,  John F. Naber ,  Kevin M. Walsh

IPC分类号： G01D001/16

CPC分类号： G01L1/165 ,  A61B5/0031 ,  A61B5/076 ,  A61B17/7002 ,  A61B2090/064 ,  A61B2560/0219 ,  A61B2562/0247 ,  A61B2562/043 ,  G01D9/005 ,  G01D21/00 ,  G01L1/142 ,  G01L1/22 ,  G01L1/225 ,  G01L19/086

摘要： The present invention provides a system 10 for measuring and remotely monitoring strain in an element 1 having a strain sensor 20, a telemetry circuit 40 for transmitting strain data to a remote location, and a reader module 60 for transmitting energy to the telemetry circuit and receiving said data.

摘要翻译： 本发明提供了一种用于测量和远程监测具有应变传感器20的元件1中的应变的系统10，用于将应变数据传输到远程位置的遥测电路40以及用于向遥测电路发送能量的读取器模块60 说数据。

公开(公告)号：US20030070491A1

公开(公告)日：2003-04-17

申请号：US09942875

申请日：2001-08-31

发明人： Tadayoshi Takahara ,  Jun Chen ,  Yoshio Sugimoto

IPC分类号： G01D001/16

CPC分类号： G06F17/5018 ,  G01N2203/0071 ,  G01N2203/0216 ,  G06F2217/41

摘要： A method for analyzing creep characteristic of a plastic molded substance is provided wherein the creep characteristic can be analyzed of an actual plastic molded substance having various shape and fastening conditions with high precision. The main stress value for each section of the analysis target is read out, hydrostatic stress nullm of each section is calculated from the main stress value, and the stress condition is determined to be tensile stress when nullm is positive and to be compressive stress when nullm is negative. Tensile or compressive characteristic value is assigned based on the stress condition at each section, and creep is calculated for a predetermined time period based on the characteristic value. By employing characteristic values depending on the stress conditions of each section, precision of creep characteristic analysis is greatly enhanced.

公开(公告)号：US20010049967A1

公开(公告)日：2001-12-13

申请号：US09824581

申请日：2001-04-03

发明人： David A. Dillard ,  Didier Lefebvre ,  Jang-Horng Yu

IPC分类号： G01D001/16

CPC分类号： G01N11/16 ,  G01N2203/0005 ,  G01N2203/0016 ,  G01N2203/0051 ,  G01N2203/0256

摘要： A method and apparatus for determining bulk material constants such as Poisson's ratio and the ratio of shear modulus to bulk modulus for elastomeric materials, including, but not limited to elastomers, rubbers, gels and sealants is disclosed. The bulk material properties are determined by measuring the pressure change of the elastomeric material when the elastomeric material is subjected to an applied pressure. The changes in the bulk material property due to temperature or a the addition of a diluent may also be determined. The apparatus includes a container that holds the elastomeric material. A pressure sensor is located in the container and is positioned to measure the pressure of the elastomeric material. The signal from the pressure sensor along with the applied pressure is used to determine a bulk material property such as Poisson's ratio or the ratio of shear modulus to bulk modulus for the elastomeric material.

摘要翻译： 公开了用于确定弹性体材料（包括但不限于弹性体，橡胶，凝胶和密封剂）的体积材料常数（例如泊松比）和剪切模量与体积弹性模量的比率的方法和装置。 散装材料性质通过在弹性体材料经受施加的压力时测量弹性体材料的压力变化来确定。 还可以确定由温度引起的散装材料性质的变化或稀释剂的添加。 该装置包括容纳弹性材料的容器。 压力传感器位于容器中并且被定位成测量弹性体材料的压力。 来自压力传感器的信号与施加的压力一起用于确定松散体材料的体积材料性质，例如弹性体材料的泊松比或剪切模量与体积弹性模量的比率。

公开(公告)号：US20040112140A1

公开(公告)日：2004-06-17

申请号：US10680279

申请日：2003-10-07

发明人： Seiki Takahashi

IPC分类号： G01D001/16

CPC分类号： G01N17/006 ,  G01N27/72 ,  G01N2203/0017 ,  G01N2203/0236

摘要： Aged deterioration of ferromagnetic construction materials is nondestructively evaluated by applying to an evaluating material a magnetic field whose magnetic field amplitude is rather low, distinguishing various lattice defects, and quantifying them separately. A method includes obtaining a stress-strain relation in advance by a tensile test, evaluating a minor hysteresis loop (reference minor loop) while applying an applied stress (null) thereto, obtaining correlation between physical quantities for evaluating aged deterioration, obtaining a subject minor hysteresis loop (subject minor loop) by a tensile test, obtaining measured values of the physical quantities from the loop, and evaluating aged deterioration of the evaluating material from the measured values.

摘要翻译： 通过对评估材料应用磁场振幅相当低的磁场，区分各种晶格缺陷并分别量化铁磁构造材料的劣化，进行非破坏性评估。 一种方法包括通过拉伸试验预先获得应力 - 应变关系，同时对其施加施加的应力（σ），评估较小的磁滞回线（参考次级环），获得用于评估老化变质的物理量之间的相关性，获得受试者次要 通过拉伸试验获得物理量的测量值，并根据测量值评估评估材料的老化退化。

公开(公告)号：US20020157478A1

公开(公告)日：2002-10-31

申请号：US10133187

申请日：2002-04-26

发明人： Joseph B. Seale

IPC分类号： G01D001/16

CPC分类号： G01N3/00 ,  G01N2203/0071 ,  G01N2203/0075 ,  G01N2203/0214 ,  G01N2203/0218 ,  G01N2203/0222

摘要： A materials characterization method models dynamic, non-linear, temperature-dependent stress, strain, hysteresis, creep, and loss of elasticity at high strain, both in test samples and in Finite Element Analysis (FEA). Incorporating universal properties of statistical mechanics and adapting domain models from ferromagnetics to the higher-dimensional realm of stress tensors, the model is applicable to polymers, rubbers, liquids, and metals in elastic and plastic deformation. The model quantifies the dynamics of both plastic and brittle failure. Apparatus and methods are shown for testing material samples and matching the computational model to sample characteristics, leading to a set of characterizing parameters and predictive simulations using those parameters. Though apparatus and testing protocols of the invention yield optimum characterizations, pre-existing data from conventional testing yield useful results.

摘要翻译： 材料表征方法在测试样品和有限元分析（FEA）中模拟动态，非线性，温度依赖应力，应变，滞后，蠕变和高应变下的弹性损失。 结合统计力学的通用性质，将领域模型从铁磁学适应到应力张量的更高维度领域，该模型适用于弹性和塑性变形中的聚合物，橡胶，液体和金属。 该模型量化了塑性和脆性破坏的动力学。 显示了用于测试材料样品并将计算模型与采样特性相匹配的装置和方法，导致一组特征参数和使用这些参数的预测模拟。 尽管本发明的装置和测试协议产生最佳表征，但是来自常规测试的预先存在的数据产生有用的结果。

公开(公告)号：US20020129660A1

公开(公告)日：2002-09-19

申请号：US09765487

申请日：2001-01-19

发明人： Andrew J. Hull

IPC分类号： G01D001/16

CPC分类号： G01N3/32 ,  G01N11/00 ,  G01N2203/0005 ,  G01N2203/0016 ,  G01N2203/0075 ,  G01N2203/0094 ,  G01N2203/0266

摘要： A method for estimating the real and imaginary Young's modulus, shear modulus and Poisson's ratio of a specimen at an excitation frequency. The specimen is first joined to a reciprocating test apparatus at one end with a mass positioned at the other end. The test apparatus reciprocates at the excitation frequency and accelerations are recorded at each end of the specimen. The Young's modulus is calculated from the recorded accelerations. The specimen is then joined to a reciprocating rotational test apparatus at one end with a rotational inertial mass positioned at the other end. Accelerations are recorded upon subjecting the specimen to rotational reciprocations at the excitation frequency. The shear modulus is calculated from these accelerations. Poisson's ration can be calculated from the Young's modulus and the shear modulus at the excitation frequency. All of the calculations may be performed giving both real and imaginary values.

摘要翻译： 用于估计激发频率下样品的实数和假想杨氏模量，剪切模量和泊松比的方法。 样品首先在一端与往复式试验装置接合，质量位于另一端。 试验装置以激发频率往复运动，并在样品的每一端记录加速度。 杨氏模量由记录的加速度计算。 然后将样本在一端与往复式旋转测试装置连接，其中位于另一端的旋转惯性质量块。 在试样以激发频率进行旋转往复运动时记录加速度。 剪切模量由这些加速度计算。 泊松比可以从杨氏模量和激发频率下的剪切模量计算。 可以执行所有计算，给出实数值和虚数值。